Item Type: Solar Inverters Wifi Module Material: ABS Uses: Mainly used for solar photovoltaic power generation grid connected inverter Communication Interface: RS232 Applicable Model: For POW series 1,Remote Monitoring: Access the inverter for remote monitoring, and remotely control and monitor through APP. 2,RS232 Port: With RS232 communication interface, can ensure fast connection and stable performance. 3,Applicable Type: Mainly used for solar photovoltaic power generation grid connected inverter, suitable for POW series models. 4,ABS Material: The shell is made of excellent ABS material, which is hard and impact resistant. 5,Simple Connection: With connecting wires and screws, easy to install and use, 4 lights are always on, it means the connection is normal. 1 x Plug 1 x Transmitter 1 x Connection Wire 2 x Screws 1 x User Manual